Only when headshotted. Which is pretty hard most of the time since its hard to aim strike rifles It's super-easy to aim warp pistols, just aim at their feet; the shockwave hits once, and then the bullet bounces and that hits them too. Potentially 2 hits per shot, so you can kill in like 4 shots if you're lucky.

why hurt the USP, you fool?! USP isn't only an exceptional far away shooter, but a good close to. It beats that short ranged thing called SPAS. Hell, with the right moves, the SCAR is better at close range.